List of practice Questions

The value of \(\frac{1 - \tan^2 45^\circ}{1 + \tan^2 45^\circ}=\)
Focal length of plano-convex lens of refractive index n and radius of curvature R is
A convex lens form image of an object at infinity. Object is at
Formula used when a light ray enters a medium of refractive index n2 from a medium of refractive index n1 at curved surface with radius of curvature R is
\(4 \Omega, 8 \Omega, R\) resistors are connected in series. Resultant resistance is \(20 \Omega\). Then \(R=?\)
When how much current flows in the fuse, it melts ?
The alloy made of Cu, Mn, Ni is
Conductivity =
Least distance of distinct vision is_____
The resistance of human body varies between
Focal length of a lens is 25 cm. Its power is___
Which one of the following is not a product in the electrolysis of aqueous NaCl ?
When the equation,\(\text{Na} + \text{H}_2\text{O} \rightarrow \text{NaOH} + \text{H}_2\) is balanced,what is the coefficient for 'Na' ?
The chemical reaction in which heat is absorbed is called
Which of the following is not an inert gas element ?
Which of the following atomic numbers of elements have similar chemical properties?
The valency of Calcium is
Atomic number of an element is 17 then the period to which this element belongs
In F2 generation, the phenotype ratio of dihybrid cross_____
Fern leaf which produces spores is called
Number of pairs of contrasting characters in pea plants selection by Mendel
The wings of a bat and wings of bird are an example of
Palaeontologists deal with____
What are the positions of auricles and ventricles in the heart ?
Through which of the following is water transported in a plant ?